Class: Hermeneutics::Dictionary

Inherits:
Object
  • Object
show all
Defined in:
lib/hermeneutics/contents.rb

Overview

A parser for header fields like DKIM-Signature

Example

ds = Dictionary.new v: 1, a: "rsa-sha256", c: "relaxed/relaxed", ...

ds = Dictionary.parse "v=1; a=rsa-sha256; c=relaxed/relaxed; ..."
ds[ "a"]  #=> "0123456"

Direct Known Subclasses

Contents

Constant Summary collapse

SEP =

:stopdoc:

";"
SEA = 
"="
RES = 
/#{SEP}\s*/
REA = 
/((?:\*(\d+))?\*)?#{SEA}/
TSPECIAL =

:stopdoc:

%r_[()<>@,;:\\"\[\]/?=]_

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash = nil) ⇒ Dictionary

Create a Dictionary object from a value and a hash.

ds = Dictionary.new v: 1, a: "rsa-sha256",
                            c: "relaxed/relaxed", ...



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# File 'lib/hermeneutics/contents.rb', line 108

def initialize hash = nil
  case hash
    when URLText::Dict then
      @hash = hash
    else
      @hash = URLText::Dict.new
      @hash.merge! hash if hash
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(sym, *args) ⇒ Object 



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# File 'lib/hermeneutics/contents.rb', line 126

def method_missing sym, *args
  if sym =~ /[^a-z_]/ or args.any? then
    super
  else
    field sym
  end
end

Instance Attribute Details

#hash ⇒ Object (readonly) Also known as: to_hash

Returns the value of attribute hash.



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# File 'lib/hermeneutics/contents.rb', line 99

def hash
  @hash
end

Class Method Details

.parse(line) ⇒ Object

Create a Dictionary object out of a string from a mail header field.

ds = Dictionary.parse "v=1; a=rsa-sha256; c=relaxed/relaxed; ..."
ds[ "a"]  #=> "0123456"



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# File 'lib/hermeneutics/contents.rb', line 46

def parse line
  rest = line.strip
  hash = parse_hash rest
  new hash
end

.urltext ⇒ Object 



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# File 'lib/hermeneutics/contents.rb', line 52

def urltext
  @urltext ||= URLText.new mask_space: true
end

Instance Method Details

#[](key) ⇒ Object Also known as: field

:call-seq:

[]( key)      -> str or nil

Find value of key.



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# File 'lib/hermeneutics/contents.rb', line 123

def [] key ; @hash[ key.to_sym] ; end

#encode ⇒ Object

Encode it for a mail header field.



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# File 'lib/hermeneutics/contents.rb', line 171

def encode
  f, *rest = encoded_parts
  if f then
    r = [ f]
    rest.each { |e|
      r.last << SEP
      r.push e
    }
  end
  r
end

#keys ⇒ Object

:call-seq:

keys()       -> ary

Returns a list of all contained keys

c = Contents.new "text/html; boundary=0123456"
c.keys                #=> [ :boundary]



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# File 'lib/hermeneutics/contents.rb', line 142

def keys ; @hash.keys ; end

#to_s ⇒ Object Also known as: quote

Show the line as readable text.



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# File 'lib/hermeneutics/contents.rb', line 151

def to_s
  quoted_parts.join "#{SEP} "
end